ATSAMD21E15B-MU

Overview

The ATSAMD21E15B-MU is an ARM microcontroller from the SAM D21E series, featuring a Cortex-M0+ core operating at a maximum frequency of 48 MHz. It integrates 32 kB of flash program memory and 4 kB of SRAM data RAM within a 32-VQFN package. The device supports a supply voltage range of 1.62 V to 3.63 V and operates between -40°C and +85°C. Key peripherals include ten 12-bit ADC channels, one 10-bit DAC, three timers/counters, and interfaces such as I2C, SPI, USART, I2S, and LIN. It holds AEC-Q100 qualification.

Feature Summary

• AEC-Q100 qualified for automotive reliability standards
• Integrated advanced analog peripherals including 12-bit ADC and 10-bit DAC
• Supports multiple communication protocols including I2C, SPI, USART, I2S, and LIN
• Functional safety (FuSa) compliant design architecture

Applications

• Automotive infotainment systems
• Instrumentation and control devices
• Industrial automation controllers
• Consumer electronics with high reliability requirements

Procurement Notes

Verify the specific suffix 'MU' corresponds to the tray packaging format when ordering. Confirm that the AEC-Q100 qualification status is required for the target application environment. Ensure the 32-VQFN footprint matches the PCB layout specifications. Check for any updated functional safety documentation if deploying in safety-critical systems.

Selection Notes

Select this component when automotive-grade reliability is mandatory alongside low-power ARM processing. The SAMD21E series offers enhanced functional safety features compared to standard consumer variants. Consider the 32 kB flash limit for complex firmware requirements. Evaluate the 26 available I/O pins against interface needs before choosing larger packages in the same family.

Part Context

This part belongs to the Microchip SAM D21E family, which extends the popular SAM D21 line with automotive qualifications. The 'E' designation indicates the inclusion of functional safety capabilities. It shares the same core architecture as other SAM D21 devices but differs in memory size and package options. The MU suffix specifically denotes the tape-and-reel or tray configuration depending on distributor listing conventions.

FAQ

Is the ATSAMD21E15B-MU suitable for automotive applications?

Yes, it is AEC-Q100 qualified and designed for automotive environments.

What is the maximum clock speed of this MCU?

The maximum clock frequency is 48 MHz.